Does IntelliJ have feature for adding (or removing) 'this.' prefix in front of appropriate points in the code shown in code editor?

Question

Some people like to omit the this. prefix to calls, such as:

addColor( Color.PURPLE ) ;

… while other folks prefer to include explicitly the this. prefix, such as:

this.addColor( Color.PURPLE ) ;

Does IntelliJ offer any feature for automatically adding and/or removing the this. prefix within the code shown in the editor?

H3AR7B3A7 · Accepted Answer · 2021-10-24 20:25:17Z

3

Save Actions plugin

The plugin, Save Actions, offers this functionality.

When installed (and activated) you can find these options under Other Settings -> Save Actions:

Add this to field access
Add this to method access
Remove unnecessary this to field and method

The plugin can be configured to execute these actions on save / idling / window deactivation.

Built into IntelliJ

InteliJ IDEA itself offers these checkstyle functionalities:

Ctrl + Alt + S -> Editor -> Inspections -> Code style issues:

Unnecessary 'this' qualifier
Instance field access not qualified with 'this'
Instance method call not qualified with 'this'

To inspect the code and apply the fix: Code -> Inspect

To auto apply fixes: Code -> Cleanup

edited Oct 24, 2021 at 20:25

answered Oct 23, 2021 at 23:09

H3AR7B3A7

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Basil Bourque Over a year ago

Unfortunately, version 2.2.0 of Save Actions plugin crashes with the launch of IntelliJ version 2021.3 EAP. This plugin would seem to be a good solution, once the crashing is sorted in future versions.

Bas Leijdekkers · Accepted Answer · 2021-10-24 16:33:19Z

2

IntelliJ has the following inspections to add a this qualifier to method calls and field references:

Java | Code style issues | Instance field access not qualified with 'this'
Java | Code style issues | Instance method call not qualified with 'this'

And the following inspection to remove unnecessary this qualifiers:

Java | Code style issues | Unnecessary 'this' qualifier

All three inspections have a quick fix, and code can be fixed in batch using Code | Inspect Code and applying the fix on the result or Code | Cleanup to immediately clean up the code.

The Save Actions plugin just calls these built-in inspections.

answered Oct 24, 2021 at 16:33

Bas Leijdekkers

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H3AR7B3A7 Over a year ago

Cool, I hope you don't mind I updated my answer, I figured IntelliJ had to offer these checkstyles but I didn't see them last night.

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Does IntelliJ have feature for adding (or removing) 'this.' prefix in front of appropriate points in the code shown in code editor?

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Save Actions plugin

Built into IntelliJ

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